KR20020042588A - Fingerprint sensor using blood flow to recognize living bodies - Google Patents

Fingerprint sensor using blood flow to recognize living bodies Download PDF

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Publication number
KR20020042588A
KR20020042588A KR1020020026068A KR20020026068A KR20020042588A KR 20020042588 A KR20020042588 A KR 20020042588A KR 1020020026068 A KR1020020026068 A KR 1020020026068A KR 20020026068 A KR20020026068 A KR 20020026068A KR 20020042588 A KR20020042588 A KR 20020042588A
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KR
South Korea
Prior art keywords
blood flow
fingerprint
sensor
living body
fingerprint sensor
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KR1020020026068A
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Korean (ko)
Inventor
한경
Original Assignee
조기영
주식회사 골드넷
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Priority to KR1020020026068A priority Critical patent/KR20020042588A/en
Publication of KR20020042588A publication Critical patent/KR20020042588A/en

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12—Fingerprints or palmprints
    • G06V40/1382—Detecting the live character of the finger, i.e. distinguishing from a fake or cadaver finger
    • G06V40/1394—Detecting the live character of the finger, i.e. distinguishing from a fake or cadaver finger using acquisition arrangements
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/15—Biometric patterns based on physiological signals, e.g. heartbeat, blood flow

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  • Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

Abstract

PURPOSE: A fingerprint sensor capable of discriminating a living body through the blood flow measurement is provided to certify a real fingerprint by installing a sensor measuring the blood flow of a human to a fingerprint input device. CONSTITUTION: A light emitting part(10) of the sensor transfers the signal and a receiving part(12) receives the signal. If the blood flow exists, the variance of the receiving quantity is detected by a detection part(20). If an object having no blood flow is placed between a light emitting part and the receiving part, a constant waveform is appeared. In case of the living body, the waveform according to the blood flow is detected by the detection part.

Description

혈류측정을 통한 생체여부 판별이 가능한 지문 센서{Fingerprint sensor using blood flow to recognize living bodies}Fingerprint sensor using blood flow to recognize living bodies

본 발명은 생체인식 분야에서 지문인식에 관한 것으로 , 현재의 지문인식 장치에서 사용하고 있는 지문입력 장치는 지문을 읽어 들이는 과정에서 생체여부에 대한판독이 어렵게 되어 있어, 복제의 위험 및 사망한 사람의 손가락을 이용하여 대리 인증을 할 수도 있다.The present invention relates to fingerprint recognition in the field of biometrics, the fingerprint input device used in the current fingerprint recognition device is difficult to read the biometrics in the process of reading the fingerprint, risk of duplication and death of the person You can also authenticate by using your fingers.

따라서 본 발명은 현재 사용하고 있는 지문 입력장치에 사람의 혈류를 측정할수 있는 센서를 부착 하여 지문 인증시 생체여부를 확인 하여 살아 있는 생체인 경우에만 지문 인증이 되도록 하여 보안을 완벽하게 이루고자 함이다.Therefore, the present invention is to complete the security by attaching a sensor that can measure the blood flow of a person to the fingerprint input device currently used to check whether the living body at the time of fingerprint authentication to be fingerprint authentication only if the living organism.

도1은 혈류를 측정 원리에 대한 도면이고, 도2는 측정시 나타나는 파형으로 생체 여부를 판독 하는 원리에 대하 도면이다. 도3은 생체 측정 센서를 지문 센서와 결합 시켜 생체인식 지문 센서에대한 도면 이다.FIG. 1 is a diagram illustrating a principle of measuring blood flow, and FIG. 2 is a diagram illustrating a principle of reading a living body as a waveform appearing during measurement. 3 is a diagram of a biometric fingerprint sensor in combination with a biometric sensor.

도1을 참조하면 , 본 발명에서의 핵심인 생체의 혈류를 측정하기 위한 센서에 대한 예가 도시되어 있다. 도 1에서 손가락(1)의 상단에 센서의 송신부(10)에서 신호를 전송 하고 수신부(12)에서 신호를 수신한다.이 과정에서 혈류의 흐름이 있으면 이에 따른 수신량의 변화가 검출부(20)에서 검출 된다. 하지만 혈류의 흐름이 없는 일반 물체가 발광부(10)과 수신부(12)사이에 놓이게 되면 일정한 파형이 나타난다. 도 2를 참조하면, 살아 있는 생체인 경우 혈류의 흐름에 따른 파형(A1)이 검출부에 검출 되며, 생체 가 아닌 경우에는 파형(A2) 가 나타 난다. 또한 도1에서 는 송신부와 수신부를 상하로 일치시켜 측정 하는 투과방식 과 손가락의 평면상에서 각도를 주어 반사 시켜 측정하는 반사 방식의 구성도 가능하다.Referring to Figure 1, an example of a sensor for measuring the blood flow of a living body which is the core of the present invention is shown. In FIG. 1, a signal is transmitted from a transmitter 10 of a sensor to a top of a finger 1 and a signal is received from a receiver 12. In this process, if there is a flow of blood flow, a change in the reception amount accordingly is detected. Is detected. However, when a general object without blood flow is placed between the light emitting unit 10 and the receiving unit 12, a constant waveform appears. Referring to FIG. 2, in the case of living organisms, the waveform A1 according to the flow of blood flow is detected by the detection unit, and in the case of non-living organisms, the waveform A2 appears. In addition, in FIG. 1, a transmission method for measuring the transmission unit and the receiving unit by moving them up and down, and a reflection method for reflecting and measuring the angle at the plane of the finger are also possible.

도3은 도1,도2에 설명한 혈류 측정장치를 현존하는 지문인식 장치와 결합시켜 생체여부의 판단이 가능한 지문 인식 센서에 대한 도면이다.3 is a diagram illustrating a fingerprint sensor capable of determining whether a living body is combined with the blood flow measuring apparatus described with reference to FIGS. 1 and 2 with an existing fingerprint recognition apparatus.

즉, 현재의 지문 센서는 손가락(30)이 프리즘위에 올려지면 LED(50)에서 빛을 발광 시키고, 손가락(30)에서 반사되는 신호를 CMOS 카메라센서(52)에서 읽어 들여 지문인식모듈(53)에서 지문영상 취득 및 비교를 하여 본인 여부를 판단하게 된다. 여기에다 혈류 측정용 송신부센서(40)에서 신호를 발사하고 , 손가락(30) 내부의 혈류에서 일부는 투과 되고 나머지 일부는 반사되어 혈류 측정용 수신부(42)에 수신된다. 이를 검출부(43)에서 검출하여 생체 여부를 판단 하게 된다. 이렇게 되면 지문인식부(53)과 생체판독부(43)의 신호를 AND회로(54)를 통하여 최종 인증신호 및 실패 신호를 만들어내게 된다. 이는 응용의 한 예이며 실제 투과방식,반사방식을 광학식,반도체식 지문 입력장치에 모두 적용이 가능하다.That is, the current fingerprint sensor emits light from the LED 50 when the finger 30 is placed on the prism, and the fingerprint recognition module 53 reads the signal reflected from the finger 30 from the CMOS camera sensor 52. In the fingerprint image acquisition and comparison to determine whether or not. In addition, the blood flow measurement transmitter sensor 40 emits a signal, and part of the blood flow in the finger 30 is transmitted and the other part is reflected and received by the blood flow measurement receiver 42. The detection unit 43 detects this to determine whether the living body. In this case, the signals of the fingerprint recognition unit 53 and the bioreader 43 generate the final authentication signal and the failure signal through the AND circuit 54. This is an example of an application, and the actual transmission method and the reflection method can be applied to both optical and semiconductor fingerprint input devices.

현존하는 지문 인식장치의 문제점인 생체판독 여부에 따른 복제나 대리 인증에 대한 불안 요인을 없앨 수 있으며 보다 확실한 보안 시스템으로 지문인식장치의 사용이 가능하게 될 수 있다.It is possible to eliminate anxiety factors for replication or surrogate authentication, depending on whether or not biometric reading is a problem of the existing fingerprint recognition device, and it is possible to use the fingerprint recognition device as a more secure system.

Claims (3)

지문입력 장치에 혈류를 측정하는 센서를 장착 시켜 생체여부의 판독이 가능하도록 한다.Fingerprint input device is equipped with a sensor to measure blood flow to enable the reading of the living body. 손가락에 송수신 센서를 이용하여 신호를 투과시키거나 반사시켜 생체 여부를 판독하는 장치A device that transmits or reflects a signal using a transmission / reception sensor on a finger to read whether the living body 지문인식 장치에 생체판독 센서를 장착하여 생체여부의 판독이 가능하도록 한다.A biometric sensor is mounted on the fingerprint recognition device to enable biometric reading.
KR1020020026068A 2002-05-11 2002-05-11 Fingerprint sensor using blood flow to recognize living bodies KR20020042588A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100471645B1 (en) * 2002-07-09 2005-03-10 씨큐트로닉스 (주) Apparatus and method for detecting a forged fingerprint for fingerprint input device
CN105512636A (en) * 2015-12-19 2016-04-20 南京福瑞林生物科技有限公司 Living fingerprint identification device and living fingerprint identification method
CN116746891A (en) * 2023-08-22 2023-09-15 荣耀终端有限公司 Blood oxygen heart rate measuring method, terminal equipment and storage medium

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6427534A (en) * 1987-07-23 1989-01-30 Matsushita Electric Ind Co Ltd Pulse wave meter
JPH07308308A (en) * 1994-05-17 1995-11-28 Matsumura Electron:Kk Method for specifying and collating individual with fingerprint and apparatus therefor
JP2000020684A (en) * 1998-06-30 2000-01-21 Mitsubishi Electric Corp Fingerprint image input device
JP2001078990A (en) * 1999-09-13 2001-03-27 Nippon Koden Corp Apparatus for measuring light absorber in blood
JP2001149349A (en) * 1999-11-26 2001-06-05 Nippon Koden Corp Sensor for living body

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6427534A (en) * 1987-07-23 1989-01-30 Matsushita Electric Ind Co Ltd Pulse wave meter
JPH07308308A (en) * 1994-05-17 1995-11-28 Matsumura Electron:Kk Method for specifying and collating individual with fingerprint and apparatus therefor
JP2000020684A (en) * 1998-06-30 2000-01-21 Mitsubishi Electric Corp Fingerprint image input device
JP2001078990A (en) * 1999-09-13 2001-03-27 Nippon Koden Corp Apparatus for measuring light absorber in blood
JP2001149349A (en) * 1999-11-26 2001-06-05 Nippon Koden Corp Sensor for living body

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100471645B1 (en) * 2002-07-09 2005-03-10 씨큐트로닉스 (주) Apparatus and method for detecting a forged fingerprint for fingerprint input device
CN105512636A (en) * 2015-12-19 2016-04-20 南京福瑞林生物科技有限公司 Living fingerprint identification device and living fingerprint identification method
CN116746891A (en) * 2023-08-22 2023-09-15 荣耀终端有限公司 Blood oxygen heart rate measuring method, terminal equipment and storage medium

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